Struct ucglib::ast::MacroDef

pub struct MacroDef {
    pub argdefs: Vec<Positioned<String>>,
    pub fields: FieldList,
    pub pos: Position,
}

Encodes a macro expression in the UCG AST..

A macro is a pure function over a tuple. MacroDefs are not closures. They can not reference any values except what is defined in their arguments.

Fields

argdefs: Vec<Positioned<String>>

fields: FieldList

pos: Position

Methods

impl MacroDef

pub fn validate_symbols(&self) -> Result<(), HashSet<String>>

Performs typechecking of a ucg macro's arguments to ensure that they are valid for the expressions in the macro.

impl MacroDef

pub fn eval(
    &self,
    args: Vec<Rc<Val>>
) -> Result<Vec<(Positioned<String>, Rc<Val>)>, Box<Error>>

Expands a ucg Macro using the given arguments into a new Tuple.

Trait Implementations

impl PartialEq for MacroDef

fn eq(&self, __arg_0: &MacroDef) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &MacroDef) -> bool

This method tests for !=.

impl Debug for MacroDef

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for MacroDef

fn clone(&self) -> MacroDef

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.